Here are some exercises on the present perfect contrasted with the past
Try them and then correct them and ask if you don't understand the answer they give
When you have finished you can do what you want from previous recommendations
including if you have headphones you can listen to the EASY NEWS on the virtualilc . See me if you don't know how to get there
Try them and then correct them and ask if you don't understand the answer they give
http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/ppvpast1.htm
http://www.englishpage.com/verbpage/verbs5.htm
http://www.englishpage.com/verbpage/verbs6.htm
When you have finished you can do what you want from previous recommendations
including if you have headphones you can listen to the EASY NEWS on the virtualilc . See me if you don't know how to get there